Talking-machine.



T. ISAAC.

TALKING MACHINE..

APPLICATION FILED AuG.H

'Patented Nov, 16, 1915.

y u lI|IIIIIIIIIIIIIIIIIIIIIIII Il IIIIIIIIIIIIIIIIIIIIIII .1.um|IIIIIIIIIIIIIIIIIIIIIIIIIII THEODOR ISAAC, 0F CHICAGO, ILLINOIS, ASSIGNOR OF TWO-THIRDS TO LOUIS SCHRAM AND JACOB ROTHSCHILD, vBOTH OF CHICAGO ILLINOIS.

e TALKING-MACHINE.

Speccation of Letters Patent.

Patented Nov. 16, 1915.

Application filed August 11,' 1913.l Serial No. 784,079.

T 0 all whom it m ay concern Be it known that I, Tmzonoi: IsAAC, a subject of the Emperor of Germany, and having legally declared my intention oi' becoming a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Talking-Machines, of which the following is a specitication.

My invention relates to talking machines and vmore particularly to the tone arm and sound box thereof, the object of the invention being to provide a construction such 15 that the sound boX may be quickly and easily adjusted to play records either of the Berliner type in which the groove has lateral vibrations or of the `Edison type in which the groove has vertical vibrations-that is, variations in depth. As a result of my invention Vthe machine may be quickly adjusted to play records differing as to type of groove and records varying as to feed,- records such as those commericallyknown as Victor and Columbia records feeding from the circumference of the disk toward the center, and others such as the Path Frres feeding from the center toward the circumference.

`Another object of my invention is to provide a needle holder and a jewel holder onv the sound box so constructed that when the needle is in place it will hold the jewel up out o'contact with the record, and when the needle is removed, the jewel may be lowered into contact with the record.

I accomplish my objects by the construction illustrated in the acconijianying drawings, in which Figure l is a longitudinal section oLt' a tone arm and sound box employing my invention. rl`hc parts are adjusted for the playing of an Edison type disk record. Fig. 2 is an end view looking toward the right in Fig. 1. Fig. 3 is a side elevation or' the sound box and adjacent portion of the tone arm showing the parts adjusted to play a Berliner type record. Fig. i is a View looking toward the rightin Fig. 3. Fig. 5

vis a sectional view of the tone arm taken on the line- 5-5 Fig. l. Fig. 6 shows in perspective the interfitting portions of the tone arm.

Similarl numerals refer to similar parte throughout the several views.

.The tone arm may be supported from any direction, but in the form of machine selected to illustrate the invention the arm is supported from beneath and delivers its sound downward. In this particular construction the record is carried upon a rotary table 1 mounted upon a box or cabinet, the upper surface'whereof is represented by the line 2. The sound is delivered to the cabinet or horn through the stationary delivery duct 3. The tone arm is articulately supported at the delivery end upon said delivery duct. In the present instance the joint is formed by a collar .4 having yan annularllange 5 working within a beading 6 formed at the upper end of the delivery duct. vSaid collar is thus rotatable and permits the arm to be swung horizontally in any* direction. The

delivery section 7 of the tone arm piv-v the tone arms is cylindrical and receives the cylindrical end 9a of the elbow section 9.

. The interfitting cylindrical portions form a;

telescopic connection which permits section il to be moved longitudinally of section 7. It also permits section 9 to be rotated relatively to section 7 about the median line oi the latter as an axis. This makes a rigid but at the same time an adjustable connection between the parts. The elbow 'section 9 is held locked in playing position by suitable locking means, the preferred form of which is shown in detail in Figs. 5 and 6. In this formonc or more recesses 9b are formed in the part 9 and a spring detent 7 is constantly urged inward toI enter them by a. spring 7b. Said spring may be a separate piece but is preferably an integral part of section 7.

Theiree end of the elbow section 9 is cylindrical and interts with the elbow section l0, preferably in thesame manner as section 9 intcrts with section 7. It is desirable also that yieldable locking means be provided for holding the elbow sections 9 and 10 in fixed relative position during the actot' playing. These locking means, indicated at 11, Fig. l, may appropriately be of the saine form as shown in Figs. 5 and 6.

- perpendicular' h pbragna. Locking means shown at l Fig. i

The free end of the second elbow section 10 is cylindrical and interfits with the collar 12 formed at the back. of the sound box 13. The median 'line of said collar passes through the center of the diaphragm 111 of the sound box and therefore receives the sound from the diaphragm and transmits it to the tone arm.- (Jn account of the inter-4 fitting construction the sound boX is rotatable upon elbow section 10 about an axis to the center of thediascrew 2O or other appropriate means. The

` jewel holdelais short and projects but a jewel. up outof playing position,

'of the when a needle it will hold: the When the needle is removed, the jewel holder may be lowered on to the record for playing,

In operation, when .a Berliner type of slight distance below the bottom needleholder and as result, is in position in the bolder,

record is to be played1 a needle is introduced into the holder and the sound box and elbow sections are relatively adjusted in such manner as to bring the parts into the position shown in Figs. 3 and 4. When it isdesi'red to play an Edison type 'of record, the needle is removed and the soud box and elbow secit "i A Iaving4 thus tions are adjusted to the position shown` in Figs. 1 and 2. D The locking devices shown are releasable by mere rotary pressure'and conversely are automatic in their locking actions, and the lockingfapertures 'corresponding to the apertures 9b are so' located in the various parts as to hold the elements of the tone arm and the sound box in proper playing position either for a Berliner or Edison type record. The rotatability of the sound "box about an 'axis perpendicular tothe cen-v ter or' its diaphragm also facilitates the' f placing the needle is to be removed orreplaced, the

' sound box may 'be rotatedI about its axis. to

"bring the needle holder up to a point where readily accessible. Y

Letters Patent, is:

In' a talkinv machine a tone arm com# prising a pivotally mounted delivery s ec` tion, an elbow section interfitting and telesco ically connectedjtherewitm and a secon elbow section intertting and revolubly .connected with the lfirst named elbow section, the telescopic portions being formed with integral interlocking means fox," holdl ing the parts in adjusted position,

In witnesses whereof, I haveh'elmt@ subscribed my name in the presence of two witnesses.

THEODOR SAAQ.. Wtnessesz' MAnrrN Gannon, K, M, JOHNSON..

j described my invention, what .l claim as new and desire to secure byf and removal of the needle for when' 

